Seems to me there will be a point of diminishing returns with horsepower. Getting it to the pavement without having it go up in smoke could be a problem. But on the other hand, putting it all into raw acceleration might make it so no one could survive the G-forces it would produce.
I know I certainly wouldn't want to get into a vehicle that could do the quarter mile in 2 seconds from a dead rest. Probably would make me a squishy little puddle in the driver's seat.